Training and certification/recertification for USEPA Method 9 (“Smoke School”), used to determine the opacity of smoke emitted from stacks, will be conducted by Eastern Technical Associates (“ETA”). April 29 is a classroom session which will be held at the Hampton Inn at 515 South Street in Concord, beginning at 8:30 a.m. Field certification sessions will be held on April 30 and May 1 at Elm Brook Park, off of Route 127, in Contoocook. Field day registration begins at 8:00 am with a scheduled start time of 8:30 a.m. Registration for the course is done through ETA, who does charge a fee to become certified, and offers a discount for early registration. To obtain information about the cost to attend the course, to pre-register, or to obtain directions to the events, go to ETA’s website at http://www.eta-is-opacity.com/schedule.htm.